Fix issue with default textures requiring arrays when using multiview

5 files changed, 113 insertions, 10 deletions

diff --git a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
index 6d5e55ee6a..e0128bfe25 100644
--- a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
@@ -2865,10 +2865,13 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 	RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
 	RendererRD::LightStorage *light_storage = RendererRD::LightStorage::get_singleton();
 
+	bool is_multiview = false;
+
 	Ref<RenderSceneBuffersRD> rb; // handy for not having to fully type out p_render_data->render_buffers all the time...
 	Ref<RenderBufferDataForwardClustered> rb_data;
 	if (p_render_data && p_render_data->render_buffers.is_valid()) {
 		rb = p_render_data->render_buffers;
+		is_multiview = rb->get_view_count() > 1;
 		if (rb->has_custom_data(RB_SCOPE_FORWARD_CLUSTERED)) {
 			// Our forward clustered custom data buffer will only be available when we're rendering our normal view.
 			// This will not be available when rendering reflection probes.
@@ -3011,7 +3014,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		if (rb.is_valid() && rb->has_texture(RB_SCOPE_BUFFERS, RB_TEX_BACK_DEPTH)) {
 			texture = rb->get_texture(RB_SCOPE_BUFFERS, RB_TEX_BACK_DEPTH);
 		} else {
-			texture = texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_DEPTH);
+			texture = texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_DEPTH : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_DEPTH);
 		}
 		u.append_id(texture);
 		uniforms.push_back(u);
@@ -3021,7 +3024,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		u.binding = 11;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
 		RID bbt = rb_data.is_valid() ? rb->get_back_buffer_texture() : RID();
-		RID texture = bbt.is_valid() ? bbt : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = bbt.is_valid() ? bbt : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
@@ -3030,7 +3033,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		RD::Uniform u;
 		u.binding = 12;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
-		RID texture = rb_data.is_valid() && rb_data->has_normal_roughness() ? rb_data->get_normal_roughness() : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_NORMAL);
+		RID texture = rb_data.is_valid() && rb_data->has_normal_roughness() ? rb_data->get_normal_roughness() : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_NORMAL : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_NORMAL);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
@@ -3040,7 +3043,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		u.binding = 13;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
 		RID aot = rb.is_valid() && rb->has_texture(RB_SCOPE_SSAO, RB_FINAL) ? rb->get_texture(RB_SCOPE_SSAO, RB_FINAL) : RID();
-		RID texture = aot.is_valid() ? aot : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = aot.is_valid() ? aot : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
@@ -3049,7 +3052,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		RD::Uniform u;
 		u.binding = 14;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
-		RID texture = rb_data.is_valid() && rb->has_texture(RB_SCOPE_GI, RB_TEX_AMBIENT) ? rb->get_texture(RB_SCOPE_GI, RB_TEX_AMBIENT) : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = rb_data.is_valid() && rb->has_texture(RB_SCOPE_GI, RB_TEX_AMBIENT) ? rb->get_texture(RB_SCOPE_GI, RB_TEX_AMBIENT) : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
@@ -3058,7 +3061,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		RD::Uniform u;
 		u.binding = 15;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
-		RID texture = rb_data.is_valid() && rb->has_texture(RB_SCOPE_GI, RB_TEX_REFLECTION) ? rb->get_texture(RB_SCOPE_GI, RB_TEX_REFLECTION) : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = rb_data.is_valid() && rb->has_texture(RB_SCOPE_GI, RB_TEX_REFLECTION) ? rb->get_texture(RB_SCOPE_GI, RB_TEX_REFLECTION) : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
@@ -3126,7 +3129,7 @@ RID RenderForwardClustered::_setup_render_pass_uniform_set(RenderListType p_rend
 		u.binding = 20;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
 		RID ssil = rb.is_valid() && rb->has_texture(RB_SCOPE_SSIL, RB_FINAL) ? rb->get_texture(RB_SCOPE_SSIL, RB_FINAL) : RID();
-		RID texture = ssil.is_valid() ? ssil : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = ssil.is_valid() ? ssil : texture_storage->texture_rd_get_default(is_multiview ? RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK : RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
diff --git a/servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp b/servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp
index 45fe067a6f..6c39560729 100644
--- a/servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp
+++ b/servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp
@@ -358,10 +358,13 @@ RID RenderForwardMobile::_setup_render_pass_uniform_set(RenderListType p_render_
 	//there should always be enough uniform buffers for render passes, otherwise bugs
 	ERR_FAIL_INDEX_V(p_index, (int)scene_state.uniform_buffers.size(), RID());
 
+	bool is_multiview = false;
+
 	Ref<RenderBufferDataForwardMobile> rb_data;
 	Ref<RenderSceneBuffersRD> rb;
 	if (p_render_data && p_render_data->render_buffers.is_valid()) {
 		rb = p_render_data->render_buffers;
+		is_multiview = rb->get_view_count() > 1;
 		if (rb->has_custom_data(RB_SCOPE_MOBILE)) {
 			// Our forward mobile custom data buffer will only be available when we're rendering our normal view.
 			// This will not be available when rendering reflection probes.
@@ -495,6 +498,8 @@ RID RenderForwardMobile::_setup_render_pass_uniform_set(RenderListType p_render_
 		RID texture;
 		if (rb.is_valid() && rb->has_texture(RB_SCOPE_BUFFERS, RB_TEX_BACK_DEPTH)) {
 			texture = rb->get_texture(RB_SCOPE_BUFFERS, RB_TEX_BACK_DEPTH);
+		} else if (is_multiview) {
+			texture = texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_DEPTH);
 		} else {
 			texture = texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_DEPTH);
 		}
@@ -505,8 +510,14 @@ RID RenderForwardMobile::_setup_render_pass_uniform_set(RenderListType p_render_
 		RD::Uniform u;
 		u.binding = 10;
 		u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
-		RID bbt = rb_data.is_valid() ? rb->get_back_buffer_texture() : RID();
-		RID texture = bbt.is_valid() ? bbt : texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+		RID texture = rb_data.is_valid() ? rb->get_back_buffer_texture() : RID();
+		if (texture.is_null()) {
+			if (is_multiview) {
+				texture = texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_2D_ARRAY_DEPTH);
+			} else {
+				texture = texture_storage->texture_rd_get_default(RendererRD::TextureStorage::DEFAULT_RD_TEXTURE_BLACK);
+			}
+		}
 		u.append_id(texture);
 		uniforms.push_back(u);
 	}
diff --git a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
index f5d6404f01..e1dc9f8624 100644
--- a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
@@ -486,6 +486,11 @@ Ref<RenderBufferCustomDataRD> RenderSceneBuffersRD::get_custom_data(const String
 // Depth texture
 
 bool RenderSceneBuffersRD::has_depth_texture() {
+	if (render_target.is_null()) {
+		// not applicable when there is no render target (likely this is for a reflection probe)
+		return false;
+	}
+
 	RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
 	RID depth = texture_storage->render_target_get_override_depth(render_target);
 	if (depth.is_valid()) {
@@ -496,6 +501,11 @@ bool RenderSceneBuffersRD::has_depth_texture() {
 }
 
 RID RenderSceneBuffersRD::get_depth_texture() {
+	if (render_target.is_null()) {
+		// not applicable when there is no render target (likely this is for a reflection probe)
+		return RID();
+	}
+
 	RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
 	RID depth = texture_storage->render_target_get_override_depth(render_target);
 	if (depth.is_valid()) {
diff --git a/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp b/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
index 0ee9b28826..50b324a9fd 100644
--- a/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
@@ -362,7 +362,7 @@ TextureStorage::TextureStorage() {
 		}
 	}
 
-	{ //create default array
+	{ //create default array white
 
 		RD::TextureFormat tformat;
 		tformat.format = RD::DATA_FORMAT_R8G8B8A8_UNORM;
@@ -388,6 +388,82 @@ TextureStorage::TextureStorage() {
 		}
 	}
 
+	{ //create default array black
+
+		RD::TextureFormat tformat;
+		tformat.format = RD::DATA_FORMAT_R8G8B8A8_UNORM;
+		tformat.width = 4;
+		tformat.height = 4;
+		tformat.array_layers = 1;
+		tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_CAN_UPDATE_BIT;
+		tformat.texture_type = RD::TEXTURE_TYPE_2D_ARRAY;
+
+		Vector<uint8_t> pv;
+		pv.resize(16 * 4);
+		for (int i = 0; i < 16; i++) {
+			pv.set(i * 4 + 0, 0);
+			pv.set(i * 4 + 1, 0);
+			pv.set(i * 4 + 2, 0);
+			pv.set(i * 4 + 3, 0);
+		}
+
+		{
+			Vector<Vector<uint8_t>> vpv;
+			vpv.push_back(pv);
+			default_rd_textures[DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK] = RD::get_singleton()->texture_create(tformat, RD::TextureView(), vpv);
+		}
+	}
+
+	{ //create default array normal
+
+		RD::TextureFormat tformat;
+		tformat.format = RD::DATA_FORMAT_R8G8B8A8_UNORM;
+		tformat.width = 4;
+		tformat.height = 4;
+		tformat.array_layers = 1;
+		tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_CAN_UPDATE_BIT;
+		tformat.texture_type = RD::TEXTURE_TYPE_2D_ARRAY;
+
+		Vector<uint8_t> pv;
+		pv.resize(16 * 4);
+		for (int i = 0; i < 16; i++) {
+			pv.set(i * 4 + 0, 128);
+			pv.set(i * 4 + 1, 128);
+			pv.set(i * 4 + 2, 255);
+			pv.set(i * 4 + 3, 255);
+		}
+
+		{
+			Vector<Vector<uint8_t>> vpv;
+			vpv.push_back(pv);
+			default_rd_textures[DEFAULT_RD_TEXTURE_2D_ARRAY_NORMAL] = RD::get_singleton()->texture_create(tformat, RD::TextureView(), vpv);
+		}
+	}
+
+	{ //create default array depth
+
+		RD::TextureFormat tformat;
+		tformat.format = RD::DATA_FORMAT_D16_UNORM;
+		tformat.width = 4;
+		tformat.height = 4;
+		tformat.array_layers = 1;
+		tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_CAN_UPDATE_BIT | RD::TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
+		tformat.texture_type = RD::TEXTURE_TYPE_2D_ARRAY;
+
+		Vector<uint8_t> sv;
+		sv.resize(16 * 2);
+		uint16_t *ptr = (uint16_t *)sv.ptrw();
+		for (int i = 0; i < 16; i++) {
+			ptr[i] = Math::make_half_float(1.0f);
+		}
+
+		{
+			Vector<Vector<uint8_t>> vsv;
+			vsv.push_back(sv);
+			default_rd_textures[DEFAULT_RD_TEXTURE_2D_ARRAY_DEPTH] = RD::get_singleton()->texture_create(tformat, RD::TextureView(), vsv);
+		}
+	}
+
 	{ // default atlas texture
 		RD::TextureFormat tformat;
 		tformat.format = RD::DATA_FORMAT_R8G8B8A8_UNORM;
diff --git a/servers/rendering/renderer_rd/storage_rd/texture_storage.h b/servers/rendering/renderer_rd/storage_rd/texture_storage.h
index c16f5274ad..b6bb9fa52f 100644
--- a/servers/rendering/renderer_rd/storage_rd/texture_storage.h
+++ b/servers/rendering/renderer_rd/storage_rd/texture_storage.h
@@ -62,6 +62,9 @@ public:
 		DEFAULT_RD_TEXTURE_3D_WHITE,
 		DEFAULT_RD_TEXTURE_3D_BLACK,
 		DEFAULT_RD_TEXTURE_2D_ARRAY_WHITE,
+		DEFAULT_RD_TEXTURE_2D_ARRAY_BLACK,
+		DEFAULT_RD_TEXTURE_2D_ARRAY_NORMAL,
+		DEFAULT_RD_TEXTURE_2D_ARRAY_DEPTH,
 		DEFAULT_RD_TEXTURE_2D_UINT,
 		DEFAULT_RD_TEXTURE_VRS,
 		DEFAULT_RD_TEXTURE_MAX